What are the troubleshooting methods for the embedded industrial computer's disk work? After a long-term operation of the embedded industrial computer, a lot of dust will accumulate in the chassis. Long-term accumulation will cause the temperature of the chassis to become higher. This will affect the normal operation of the machine, especially once the power supply is insufficient or an emergency shutdown is required, the control system is prone to failures such as the disk cannot be started, the system cannot be loaded, and the login screen is left for a long time.
One. Faults caused by working environment:
Due to the needs of normal production, the industrial control system of some factories needs to work for a long time, which brings a huge test to the operating system of the industrial computer. After the embedded industrial computer has been running for a long time, a large amount of dust accumulates in the case, and the temperature of the case is relatively high. Usually everything works normally without shutting down. Once the power supply is insufficient or emergency shutdown is required, the control system is prone to failures such as the disk cannot be started, the system cannot be loaded, and the login screen is left for a long time.
Industrial Tablet PC
2. Failure analysis and troubleshooting methods:
There are many reasons for the disk failure. The editor here roughly divides it into the quality problem of the industrial computer disk itself and the failure problem caused by the working environment.
The quality of the disk itself cannot be studied in depth. Only when starting to build the control system, choose to buy a better quality and branded hard disk, or use Scandisk, Norton Disk Doctor and other software to detect disk surface defects. If we can predict the quality and health of the hard drive, this will give us time to choose the hard drive and back up important data. I think we will equip everyone with a more stable solid state drive to make the hard drive run faster.
Third, the common problems caused by the working environment are as follows:
1. The embedded industrial computer has a long working time. Due to the needs of normal production, the industrial control system of some factories needs to work for a long time, which brings a huge test to the operating system of the industrial computer. However, from the actual operation, after running for more than a week, the disk will accumulate a large amount of data fragments during the huge data exchange process, which is easy to cause the disk logical bad sectors, read and write errors, and slow system operation and startup. Therefore, when the production permits, the industrial computer can be restarted and disk defragmented regularly to reduce disk errors caused by long-time work. The restart time can be determined according to the amount of data processed by the industrial computer and the production situation. It is not hard and requires readers to explore it slowly. From the author's actual experience, restarting and arranging the industrial computer once a standard month (30 days) can reduce the probability of disk errors.
2. The internal temperature of the embedded industrial computer is too high. In an environment that requires long-term high-temperature operation, the computer components are prone to aging and the frequency of hard disk failures is also higher than that. This requires the maintenance personnel of the automation system of the factory to pay close attention to the temperature of the chassis during daily inspections, and try to keep the temperature of the industrial computer between 10--30 degrees Celsius. Too high or too low temperatures are not suitable for hard disk protection. If the case temperature reaches 30 degrees Celsius, the temperature of the internal hard disk will reach 40 degrees or higher. We can simply DIY our own industrial computer to reduce the ambient temperature.
1. Replace high-power CPU and hard drive fan to speed up heat dissipation;
2. Install a fan inside the chassis to draw air outside the chassis to increase air convection;
Three. Install a small axial fan on the cabinet where the industrial computer is placed;
Fourth, install air conditioners in the control room to reduce the temperature of the space.
1. There are many inhalable particles in the air. Most of the raw materials in many factories need powder for processing. In addition, the large air flow and dusty outside make it easy to accumulate a large amount of sticky dust in the industrial computer, which causes the local temperature in the industrial computer to be too high and causes hardware damage. This situation mostly occurs around cooling fans such as CPU, power supply, hard disk, and graphics card. Where there is light dust accumulation, regular dust blowing can be used if normal production permits. In places with serious dust accumulation, dust filter gauze can be placed at the ventilation place of the industrial control cabinet and cleaned regularly.
2. The ground is trembling. Many factories require motors to produce physical displacement actions such as drag and vibration, which not only bring huge noise, but also the vibration caused by the machine will cause huge damage to industrial computer disks, optical drives, and floppy drives. The technology of disk production is getting higher and higher, and the current speed has reached 7,200 revolutions per second or even higher. In the large amount of data exchange in the automated control system, the disk that runs for a long time and at high speed is prone to the disk vibration, which will cause the disk read and write ability to decline, the head positioning is slow, and even the disk is damaged; therefore, it is beneficial to reduce the environmental vibration of the industrial computer. Protect the disk. During engineering design, we can keep the industrial computer as far away as possible from the work site with a large seismic source; if the work location cannot be changed, we can also put sponge and cushioning objects under the industrial control cabinet and box to reduce vibration. The harm.
3, the power supply voltage fluctuates greatly, and the power is easily cut off. With the rapid development of industry and life, the demand for electricity is also increasing. In many areas, power supply is insufficient, voltage is unstable, and power outages are likely to occur. Unstable voltage and sudden power outages cause frequent system restarts, and system files are prone to be lost and cannot be started normally. The magnetic heads that are performing read and write operations may sometimes cause IPC disk failure due to inaccurate head return due to power outages. Therefore, the stability of the power supply in the working environment of the industrial computer is related to whether the industrial computer is working normally or not. We can use stabilized power supply and UPS uninterruptible power supply for protection. The specific equipment selection depends on the size of the load and the amount of time required to maintain the work.
4. The environmental humidity is not suitable. The embedded industrial computer is mainly composed of integrated circuits with many electronic components, and its insulation performance has a great relationship with the environmental humidity. If the humidity is too high, it is easy to cause the circuit board to be short-circuited and burned; if the humidity is too low, it is easy to generate static electricity, and it will also break down some electronic components. Therefore, if the humidity is too high or too low, it will bring potential threats to the industrial computer. On the issue of electrostatic protection, we must have a good instrument grounding on the industrial computer. It is worth noting that the grounding of the industrial computer is different from the lightning protection grounding in civil engineering. The grounding location should be three meters away from the control room. ∮20 galvanized angle steel is used for vertical grounding at 1700mm under the outdoor floor. The number of grounding meets The grounding resistance is less than 1 ohm, and then 40404 galvanized flat steel is reliably welded to the grounding body, and the 25mm copper cable is replaced in the building to the system ground terminal and the industrial computer grounding point. This can effectively reduce the harm caused by static electricity.
